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Parallel collections now use `scala.concurrent.ExecutionContext`
by default.
The `ExecutionContextTaskSupport` is optimized to use the
`ForkJoinPool` underlying the `ExecutionContext` if possible.
Otherwise, a fallback `TaskSupport` that creates a reduction tree and
execute an operation through `Future`s is used.
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One last flurry with the broom before I leave you slobs to code
in your own filth. Eliminated all the trailing whitespace I
could manage, with special prejudice reserved for the test cases
which depended on the preservation of trailing whitespace.
Was reminded I cannot figure out how to eliminate the trailing
space on the "scala> " prompt in repl transcripts. At least
reduced the number of such empty prompts by trimming transcript
code on the way in.
Routed ConsoleReporter's "printMessage" through a trailing
whitespace stripping method which might help futureproof
against the future of whitespace diseases. Deleted the up-to-40
lines of trailing whitespace found in various library files.
It seems like only yesterday we performed whitespace surgery
on the whole repo. Clearly it doesn't stick very well. I suggest
it would work better to enforce a few requirements on the way in.
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Fixed parallel ranges to use the same range logic under the hood, and
not introduce code duplication.
Slight fix in Tasks.
No review.
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Special cased with thread pool executor scheduling. Fixed an ugly
concurrency bug where futures returned by a thread pool executor didn't
remove the task from the queue when cancel was called. Note to self and
others: don't cancel futures returned by thread pool executors, it might
lead to unexpected behaviour. Modified the executor to add new threads
if all the active threads are syncing, in order to avoid deadlocks.
Fixed a hidden bug in AdaptiveWorkStealingTasks, where correct behaviour
depended on the execution order of the tasks. This didn't fail before
with ForkJoinTasks, since there the execution order is well-defined.
Scalachecked 1.5 & 1.6 support.
No review.
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Mostly refactored existing test functionality for parallel collections.
Added immutable hash set tests.
No review.
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Plus one wild goose chase and test fixes.
No review.
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Fixed a scalacheck test group "test entire subdirectory" problem. It's
now possible to add scalacheck tests consisting of multiple files. No
review.
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Temporarily disabled collections checks to keep build from breaking.
No review
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Review by phaller (not urgent).
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